Maintenance Manual Table of Contents > Tail Rotor Drive Gear and Shaft Assembly
Inspection
Check the Tail Rotor Drive Gear (059) for broken or badly worn teeth. Inspect the Drive Gear (059) for cracks in the small spaces between the drive holes on the face of the gear. Figure 1.
Check the Tail Rotor Shaft (065) for bends and other obvious damage. Make sure the Tail Rotor Shaft Stop (066) is securely attached to the Tail Rotor Shaft (065) with CA adhesive.
Check the Bearings (062) in the Tail Rotor Gearbox Housing (061) for excessive play and smooth operation.
The Silicone Tube Section (024) should fit snugly on the Tail Rotor Shaft (065). I like to use a slightly longer piece than normal to get the extra bit of grip. I do this for two reasons: I have heard many people complain of Tail Rotor Blades popping off. And I like to keep a little pressure on the inner races of the bearings to ensure that the Tail Rotor Shaft (065) does not spin inside the Bearing (062) inner race.
Exploded View
Figure 1
Removal
Remove the Tail Rotor Blade (057) as outlined in the previous section.
Slide the Tail Rotor Drive Gear (059) off of the Tail rotor Shaft (065). Pull the Tail Rotor Shaft (065) out of the Tail Rotor Gearbox Housing (061).
Exploded View
Disassembly
All that's left is to remove the Bearings (062) from the Tail Rotor Gearbox Housing (061). Use a stiff wire (like a paper clip) with a sharp bend near one end (Figure 2) to hook the bearings and pull them out.
Exploded View
Figure 2
Assembly
Install the Bearings (062) into the Tail Rotor Gearbox Housing (061).
Exploded View
Installation
Slide the Tail Rotor Shaft (065) through the Tail Rotor Gearbox Housing (061). Notice that the Tail Rotor Drive Gear (059) hub is longer on one side than the other. Figure 3. The shorter side must be installed inboard as shown to ensure proper gear mesh.
Reinstall the Tail Rotor Blade (057) as outlined in the previous section.
Exploded View
Figure 3